Cooling fan with damping and vibration isolation functions

Abstract

The cooling fan comprises a main frame body, fan blades and a vibration isolation piece, the main frame body is provided with a hollow cylinder body and an extension plate installed on one end face of the cylinder body, a fixing frame is arranged on the other end face of the cylinder body, and the fan blades are rotationally arranged in the cylinder body and installed on the fixing frame. The vibration isolation piece is provided with an avoiding through groove, the vibration isolation piece is arranged on the cylinder body in a sleeving mode through the avoiding through groove, the vibration isolation piece is made of rubber, and the main frame body is fixedly connected with an external structure through the vibration isolation piece. An annular limiting groove is formed in the outer side face of the barrel body, a protruding edge matched with the limiting groove is arranged at the position, at the edge of the avoiding barrel groove, of the vibration isolation piece, and the protruding edge is clamped in the limiting groove. According to the cooling fan with the damping vibration isolation function, on the basis of vibration isolation and noise reduction, convenient and rapid disassembly and assembly can be achieved, meanwhile, the structure is simplified, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a heat dissipation fan with damping and vibration isolation. Background Art

[0002] Cooling fans are used in many situations where heat dissipation is required, especially in electrical equipment with concentrated heat. Due to their compact structure, cooling fans can save a lot of space and are easy to install, so they are widely used. Traditional cooling fans are installed and connected to electronic devices and cabinets by means of bolts or clips. However, the cooling fan itself is a vibration source device. The traditional rigid connection method will transmit the vibration of the fan to the electronic device or cabinet, thereby affecting the instruments and equipment, especially causing errors in the measurement of precision instruments. The existing technology also has the provision of vibration isolation devices to reduce the amplitude and noise of the cooling fan, but the existing vibration isolation devices are complex in structure and are not conducive to the convenient disassembly and assembly of the cooling fan.

[0003] Therefore, the present invention designs a heat dissipation fan with damping and vibration isolation to overcome the above technical problems. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a cooling fan with damping and vibration isolation, which can be easily and quickly disassembled and assembled on the basis of vibration isolation and noise reduction, while simplifying the structure and reducing production costs.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A heat dissipation fan with damping and vibration isolation, comprising: a main frame, fan blades, and a vibration isolation member; the main frame is provided with a hollow barrel and an extension plate mounted on one end face of the barrel; the other end face of the barrel is provided with a fixing frame; the fan blades are rotatably disposed in the barrel and mounted on the fixing frame;

[0007] The vibration isolator is provided with an avoidance slot, and the vibration isolator is sleeved on the cylinder body through the avoidance slot. The vibration isolator is made of rubber, and the main frame is fixedly connected to the external structure through the vibration isolator.

[0008] In one embodiment, an annular limiting groove is provided on the outer side of the barrel body, and the vibration isolator is provided with a ridge adapted to the limiting groove at the edge of the avoidance barrel groove, and the ridge is clamped in the limiting groove.

[0009] In one embodiment, a rotation limiting block is provided in the limiting groove, a rotation limiting notch corresponding to the rotation limiting block is provided on the ridge, and the rotation limiting block is clamped in the rotation limiting notch.

[0010] In one embodiment, a plurality of through holes are formed around the vibration isolator, and the through holes are used to pass screws therethrough, thereby fixing the vibration isolator to the external structure.

[0011] In one embodiment, the vibration isolator is provided with a plurality of latches, which are evenly distributed around the vibration isolator. The latches are located on a side of the vibration isolator away from the main frame, and the latches are integrally formed with the vibration isolator.

[0012] In one embodiment, the vibration isolator is provided with a reinforcing rib, the reinforcing rib is located on a side of the vibration isolator away from the main frame, and the reinforcing rib is integrally formed with the vibration isolator.

[0013] In one embodiment, the reinforcing rib protrudes from the vibration isolator, and the distance between the end surface of the reinforcing rib and the end surface of the fixing frame is H, where H=1-2 mm.

[0014] In one embodiment, an adhesive is provided between the inner wall of the avoidance groove and the barrel.

[0015] In one embodiment, a motor is provided between the fixing frame and the fan blades. The motor is fixedly mounted on the fixing frame, and the fan blades are connected to an output shaft of the motor.

[0016] In one embodiment, a wire storage groove is provided on the fixing frame, and the wire storage groove is used to accommodate the conductive wires of the motor.

[0017] In summary, the heat dissipation fan with damping and vibration isolation of the present invention can achieve convenient and quick disassembly and assembly on the basis of vibration isolation and noise reduction, while simplifying the structure and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for use in the embodiments.

[0019] Figure 1 This is a structural diagram of the heat dissipation fan with damping and vibration isolation of the utility model;

[0020] Figure 2 for Figure 1 An exploded view of a cooling fan with damping and vibration isolation is shown;

[0021] Figure 3 for Figure 2 The structural diagram of the main frame and the vibration isolation member shown;

[0022] Figure 4 A partial cross-sectional view of the heat dissipation fan with damping and vibration isolation according to the first embodiment;

[0023] Figure 5 This is a structural schematic diagram of a heat dissipation fan with damping and vibration isolation according to the second embodiment;

[0024] Figure 6 This is a schematic structural diagram of the vibration isolation member of Example 2;

[0025] Figure 7 Schematic diagram of the structure of the vibration isolation member in another embodiment. DETAILED DESCRIPTION

[0026] To facilitate understanding of the present invention, the present invention will be described in more detail below with reference to the accompanying drawings. Those skilled in the art can easily understand the other advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in this specification for those skilled in the art to understand and read, and are not intended to limit the applicable conditions for the implementation of the present invention. Therefore, they have no substantial technical significance. Any structural modifications, changes in proportional relationships, or adjustments in size, without affecting the effects and objectives that can be achieved by the present invention, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, terms such as "upper," "lower," "left," "right," and "center" used in this specification are only used for clarity of description and are not intended to limit the applicable scope of the present invention. Changes or adjustments to their relative relationships are also considered to be within the applicable scope of the present invention without substantial changes to the technical content.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended solely for the purpose of describing specific embodiments and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] The utility model provides a heat dissipation fan 1 with damping and vibration isolation, such as Figure 1 and Figure 2 As shown, it includes: a main frame 11, fan blades 12 and a vibration isolator 13. The main frame 11 is provided with a hollow cylinder 111 and an extension plate 112 installed on one end surface of the cylinder 111. The other end surface of the cylinder 111 is provided with a fixing frame 113. The fan blades 12 are rotatably arranged in the cylinder 111 and are installed on the fixing frame 113. Preferably, a motor (not shown) is provided between the fixing frame 113 and the fan blades 12, and the motor is fixedly installed on the fixing frame 113. The fan blades 12 are connected to the output shaft of the motor.

[0029] The vibration isolator 13 defines a relief slot 131, which is then mounted on the barrel 111. The vibration isolator 13 is made of rubber, and the main frame 11 is fixedly connected to an external structure (such as an external electronic device or cabinet) through the vibration isolator 13. In other words, the vibration isolator 13, as the connecting medium between the main frame 11 and the external structure, has the function of reducing vibration amplitude. That is, during operation, the vibration of the main frame 11 caused by the rotation of the fan blades 12 is attenuated when transmitted to the vibration isolator 13, thereby reducing the amplitude of the vibration transmitted to the external structure.

[0030] In this embodiment, if Figure 3 and Figure 4 As shown, an annular retaining groove 114 is formed on the outer side of the barrel 111, and a ridge 132 is provided on the edge of the avoidance barrel groove 131 of the vibration isolator 13, which is adapted to the retaining groove 114. During installation, the ridge 132 is retained within the retaining groove 114. Since the vibration isolator 13 is made of rubber, the ridge 132 has a certain degree of elasticity. When the vibration isolator 13 is installed, the ridge 132 is tightly retained in the retaining groove 114 under the action of the elastic force. At the same time, the ridge 132 cooperates with the retaining groove 114 to limit the vibration isolator 13 in the axial direction, preventing the vibration isolator 13 from sliding axially on the barrel 111.

[0031] Preferably, Figure 2 As shown, a rotation-limiting block 115 is disposed within the limiting groove 114, and a rotation-limiting notch 133 corresponding to the rotation-limiting block 115 is formed on the ridge 132. The rotation-limiting block 115 is retained within the rotation-limiting notch 133. The rotation-limiting block 115 cooperates with the rotation-limiting notch 133 to limit the position of the vibration isolator 13 mounted on the barrel 111, thereby preventing the vibration isolator 13 from rotating relative to the barrel 111.

[0032] Of course, adhesive can also be provided between the inner wall of the avoidance groove 131 and the barrel 111. By replacing the ridge 132 with the retaining groove 114, the adhesive can also achieve a stable connection between the vibration isolator 13 and the main frame 11. In contrast, the connection method using adhesive can further reduce production costs, but there is also the problem of aging and failure of the adhesive, resulting in a limited service life.

[0033] In addition to the basic features of reducing amplitude (vibration isolation) and reducing noise, the vibration isolation member 13 of the present invention also has the advantage of being easy to assemble and disassemble, as follows:

[0034] In the first embodiment, Figure 3 and Figure 4As shown, a plurality of through holes 134 are provided around the vibration isolator 13, and the through holes 134 are used to penetrate screws, thereby fixing the vibration isolator 13 to the external structure. During installation, the fan blades 12 and the motor are first assembled to the main frame 11, and then the vibration isolator 13 is sleeved onto the main frame 11, and finally screws are used to penetrate the through holes 134, so that the cooling fan 1 can be installed on the external structure. It should be explained that although the connection between the screw and the external structure is a traditional rigid connection, the screw and the main frame 11 are connected through the vibration isolator 13, and the vibration isolator 13 can absorb most of the vibration of the main frame 11, so that the amplitude transmitted to the screw and the external structure can be significantly reduced;

[0035] In the second embodiment, Figure 5 and Figure 6 As shown, the vibration isolator 13 is provided with a plurality of latches 135, which are evenly distributed around the vibration isolator 13. The latches 135 are located on the side of the vibration isolator 13 away from the main frame 11, and the latches 135 are integrally formed with the vibration isolator 13. During installation, the fan blades 12 and the motor are first assembled to the main frame 11, and then the vibration isolator 13 is sleeved onto the main frame 11. Finally, the latches 135 are plugged into the pre-reserved screw holes of the external structure, and the cooling fan 1 can be installed on the external structure. It can be seen that in this embodiment, the latches 135 are used instead of screws. During installation, it only needs to be pressed to connect it with the screw holes of the external structure, which can further simplify the installation operation. At the same time, the latches 135 are integrally formed with the vibration isolator 13, and there is no need to prepare additional screws, and there is no risk of screws being accidentally lost.

[0036] It should also be emphasized that, in both the first and second embodiments, during the disassembly and maintenance of the cooling fan 1, in addition to conventionally removing the cooling fan 1 as a whole, the main frame 11 and the blades 12 can also be removed separately, that is, the vibration isolation member 13 is separated from the main frame 11. In this way, the main frame 11 can be removed without removing the vibration isolation member 13, thereby performing simple maintenance or cleaning operations, further simplifying the disassembly and maintenance operations.

[0037] Compared with the prior art, the vibration isolator 13 of the present invention also has the advantages of simple structure and low production cost. Specifically, the invention patent with publication number "CN112762019A" and titled "Fan vibration reduction mechanism, fan assembly and drone" discloses a vibration reduction mechanism, which includes an elastic vibration reduction ring, which is constructed to be elastically sleeved on the outer periphery of the fan and can be clamped between the outer wall of the fan and the inner wall of the fan mounting seat, and is used to be squeezed by the fan and the fan mounting seat after the fan is installed to generate an elastic pre-pressure against the fan and the fan mounting seat. The vibration reduction mechanism of the prior art has a complex structure and needs to be used in conjunction with the fan mounting seat. In comparison, the vibration reduction member 13 of the present invention has a simple structure and a small number of parts. It can be easily obtained through an injection molding process, has fewer processing steps, and has lower production costs, thereby improving the overall economy of the cooling fan 1.

[0038] In other embodiments, the vibration isolator 13 is provided with a reinforcing rib 136 (eg Figure 7 As shown, the reinforcing rib 136 is located on the side of the vibration isolator 13 away from the main frame 11, and the reinforcing rib 136 is integrally formed with the vibration isolator 13. In addition, the reinforcing rib 136 protrudes from the vibration isolator 13, and the distance between the end surface of the reinforcing rib 136 and the end surface of the fixing frame 113 is H, where H = 1 to 2 mm.

[0039] The design of the reinforcing ribs 136 has two functions: on the one hand, it enhances the strength of the vibration isolator 13, improves its bending resistance, and can effectively prevent it from deformation during use; on the other hand, the reinforcing ribs 136 raise the vibration isolator 13, thereby ensuring that the end face of the main frame 11 will not contact the external structure, thereby ensuring the vibration isolation effect of the vibration isolator 13.

[0040] Preferably, the fixing frame 113 is provided with a wire-hiding groove 116 (such as Figure 3 As shown), the wire groove 116 is used to accommodate the conductive wires of the motor. After installation, the wire groove 116 provides a space for the conductive wires to avoid being pressed by the main frame 11 and the external structure, and the conductive wires accommodated in the wire groove 116 are not easily misplaced or pulled, which plays a certain protective role.

[0041] In summary, the heat dissipation fan 1 with damping and vibration isolation of the present invention can achieve convenient and quick disassembly and assembly on the basis of vibration isolation and noise reduction, while simplifying the structure and reducing production costs.

[0042] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A cooling fan with damping and vibration isolation, characterized in that: include: A main frame, fan blades and a vibration isolator, wherein the main frame is provided with a hollow cylinder and an extension plate mounted on one end surface of the cylinder, and the other end surface of the cylinder is provided with a fixing frame, and the fan blades are rotatably arranged in the cylinder and mounted on the fixing frame; The vibration isolator is provided with an avoidance slot, and the vibration isolator is sleeved on the cylinder body through the avoidance slot. The vibration isolator is made of rubber, and the main frame is fixedly connected to the external structure through the vibration isolator.

2. The heat dissipation fan with damping and vibration isolation according to claim 1, characterized in that: An annular limiting groove is provided on the outer side surface of the cylinder body, and a ridge adapted to the limiting groove is provided on the edge of the avoidance groove of the vibration isolator, and the ridge is clamped in the limiting groove.

3. The heat dissipation fan with damping and vibration isolation according to claim 2, characterized in that: A rotation limiting block is provided in the limiting groove, a rotation limiting notch corresponding to the rotation limiting block is provided at the convex edge, and the rotation limiting block is clamped in the rotation limiting notch.

4. The heat dissipation fan with damping and vibration isolation according to claim 2, characterized in that: A plurality of through holes are provided around the vibration isolator, and the through holes are used to penetrate screws, thereby fixing the vibration isolator on the external structure.

5. The heat dissipation fan with damping and vibration isolation according to claim 2, characterized in that: The vibration isolator is provided with a plurality of latches, which are evenly distributed around the vibration isolator. The latches are located on a side of the vibration isolator away from the main frame, and the latches are integrally formed with the vibration isolator.

6. The heat dissipation fan with damping and vibration isolation according to claim 2, characterized in that: The vibration isolator is provided with a reinforcing rib, the reinforcing rib is located on a side of the vibration isolator away from the main frame, and the reinforcing rib is integrally formed with the vibration isolator.

7. The heat dissipation fan with damping and vibration isolation according to claim 6, characterized in that: The reinforcing rib protrudes from the vibration isolating component, and the distance between the end surface of the reinforcing rib and the end surface of the fixing frame is H, where H=1-2 mm.

8. The heat dissipation fan with damping and vibration isolation according to claim 1, characterized in that: An adhesive is provided between the inner wall of the avoidance groove and the cylinder body.

9. The heat dissipation fan with damping and vibration isolation according to claim 1, characterized in that: A motor is provided between the fixing frame and the fan blades. The motor is fixedly mounted on the fixing frame, and the fan blades are connected to an output shaft of the motor.

10. The heat dissipation fan with damping and vibration isolation according to claim 9, characterized in that: The fixing frame is provided with a wire storage groove, and the wire storage groove is used to accommodate the conductive wires of the motor.

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